Messages in this thread | | | From | "Luck, Tony" <> | Date | Wed, 24 Aug 2011 13:46:58 -0700 | Subject | RE: [ia64] Question on __ARCH_WANT_UNLOCKED_CTXSW |
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> happen to remember what the perceived benefit of using > __ARCH_WANT_UNLOCKED_CTXSW was about?
No - digging around the code hasn't rung any bells for me either.
Perhaps just general goodness for not holding a lock for longer than we need to? But that would imply some case where someone else could do something useful by being able to grab the lock when we drop it. About the only thing I can think of is that it would allow tasks to be re-balanced just a teeny bit earlier --- but re-balancing ought to be somewhat rare, yes?
-Tony
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